Should I buy starcraft 2?

Is starcraft 2 really worth the 60 dollars? I'm a teenager, and I have actually played starcraft 1. Well, at that time, I was pretty young and i was not into those complicated gameplays, so i didn't enjoy it that much. I am more of a FPS guy, but I got kinda bored of it, and somehowi started to watch sc2 progamers gameplays recently. It looked really fun, and now I actually want something of a challenge which i get to use my brain (in sc1, i would always fool around with those cheat keys...i really never tried.). But I just don't have any idea of those hotkeys and basic strategy. Will I get owned in multiplayer? (i am more of a multiplayer guy, but ehh... I do enjoy singleplayer campaigns) Some ppl are saying that multiplayer is way too hard, while others say that the server picks an opponent similar to your skills. I don't want to spend 60 bucks just to get my *** kicked over and over again. Well, I can handle when I lose a few times and have some wins, but I dont think i will have fun if I lose and lose and lose over and over again.